Change background of flash for your DVD

once I use flash to DVD covnerter to convert flash to MPEG for my DVD, I found that sometimes the converted flash is not very good, because the flash color is too dark, but I want a vivid color, recently I found someone can change the background color for their DVD, them use SWF to Video converter to change the background color, and select part of the flash to convert, this is very useful to get a good effect
now, I can enjoy good flash on my DVD